I have a Steinway with serial number 410 975 could you please tell me how old.

Between 1925 and 1930. A more precise dating would require possibly examination of markings on the piano or a piano technician or a historian who specializes in vintage pianos. Piano Serial Numbers Search - Find the Age & History of Your Piano (total-piano-care.com)

Gulbransen Player Piano - Antique Piano Shop

1927 Gulbransen 55" Upright Piano (intunepianoservices.com)

Gulbransen Upright Pianos - Piano restoration & sales nationwide: Steinway, Yamaha & Knabe (countrypiano.com)

1920: Serial numbers around 140,000
1925: Serial numbers around 218,000
1930: Serial numbers around 301,000

Question edited for clarity.

Check out the links

Epiphone Guitar/Mandolin Serial Number Decoder - GuitarInsite

https://www.guitarinsite.nl > serienummers-epiphone_eng
Five digit serial numbers. Five digits with a space after the first digit and custom shop on the back of the headstock, applied from 1990 to 1999. The first ...
11: Qingdao
15: Qingdao (electric)
12: DeaWon or Unsung
23: Samick

How To Verify Authentic Gibson Serial Numbers - Epiphone

https://www.epiphone.com > en-US > Support > Serial-...
The 1st digit indicates the year of manufacture for the 4 & 5 digit serial numbers, these were used from 1989-1999. The 1st and 2nd indicate the year of ...

People also ask

How do I check an Epiphone serial number?"); display: inline-block; height: 24px; width: 24px; margin-top: -1px;"> Where are Epiphone Customs made?"); display: inline-block; height: 24px; width: 24px; margin-top: -1px;"> Can you look up guitar serial numbers?"); display: inline-block; height: 24px; width: 24px; margin-top: -1px;"> How old is my guitar by serial number?"); display: inline-block; height: 24px; width: 24px; margin-top: -1px;"> Feedback

Epiphone Serial Number Decoder - The Guitar Dater Project

https://www.guitardaterproject.org > epiphone
The Epiphone serial number decoder currently supports 12 serial number formats from 25 factories. Vintage numbers from 1932 to 1970 are supported.
https://www.google.com/search?q=epiphone+special+custom+shop

..

This looks to be an Essex Baby Grand or a Boston Baby Grand, both made by renowned piano makes - Steinway.

(1905)!! Please Read On How To Tell How Old Your Piano Is !! I Learned This From Grandma !!
Piano serial numbers usually have five to seven digits, but may have fewer or more, depending on the manufacturer and age of your piano. Serial numbers may also include a letter as well.
Here are the TOP FIVE places to locate the serial number of your spinet, console, or upright piano:
Serial number locations are found:
1) On the piano's cast iron plate. After lifting up the lid, look along the top front area of the plate. The serial number may be to the right or the left, or in the middle.

2) Under the opened lid on the ledge, stamped on a little plaque, to the right or to the left.

3) Stamped on the back of the piano; near the top of the wood frame.

4) Printed on one of the hammers, found on either end of the piano (newer or imported pianos).

5) Printed on one the keys - behind the nameboard, inside the piano (newer or imported pianos)

Check here (it's for Hoffmann pianos too)...

http://www.bechstein.com/en/service/how-old-is-my-bechstein/

No, but you can try:

"Serial numbers can be extremely tricky," says Gibson Customer Service Manager Jason Davidson, whose team fields calls and emails regarding every Gibson division. "Some can tell you a lot about a guitar, and some don't really tell you anything. Gibson has had so many different schemes over the years, and now we're using reissue serial numbers that look like the old serial numbers."
Gibson Support Serial Number Search

OK, I don't know much about Musical Instruments but deffinitively it's impossible to answer your question since you don't even tell us WHAT is the musical instrument in question.
Now, if you have some vintage musical instrument, take it to a musical instruments' store and show it to some expert. That's the only way to tell how old is it and they might tell you it's value,
Of coures if it's a piano, you just should take some good photos, look for make, model and serial and any relevant data

That serial number should be 1887-88.

Get it appraised by a local piano tuner. Steinway is an excellent brand, and holds it's value well. A tuner will have a better idea.